Our domain is not longer connected to the blogg?

Today when I tried to go to our blogg http://www.prfektkontor.se I got a message that it wasn´t there. We had the domain connected to the blog and we have that domain registred but the redirection from that to our blog seams to be disconnected in some way? How do we get that back again?
Blog url: http://prfektkontorblogg.wordpress.com/